Abstract
Dietary salt restriction is believed to be a mainstay in the management of patients with heart failure [1–3]. We have recently reported that changes in B-type natriuretic peptide (BNP) levels were associated with changes in daily salt excretion in patients with compensated heart failure [4]. We have also shown that B-type natriuretic peptide levels were elevated (≥150pg/ml) in 41% of patients with asymptomatic permanent atrial fibrillation (AF) without structural heart disease [5]. Thus, we hypothesized that permanent AF patients may be in latent heart failure and that salt reduction could contribute to the reduction of BNP levels.
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